Council members are found in the same places each game, and they drop better than normal monsters, often yielding double stacks of gold or two items, but they do not drop as well as Champions or Bosses. Prior to v1.09, Council Members and the SuperUniques found with them, were very difficult to kill thanks to their habit of healing themselves by teleporting, or by casting a healing spell on themselves. They very seldom teleport or cast healing in v1.11.

Regen Rate tells what % of a monster's hit points are recovered per second. Standard is 1.2/sec. Council Members do not regenerate health, but may occasionally heal themselves with a spell. (They healed far more frequently prior to v1.09.)

Blocking values are assigned to every monster in the game, but the ability is seldom enabled, so most monsters can not block (Hence the blocking % given on most Diablo II monster pages, including Blizzard's, is inaccurate.) When enabled, blocking tells what % of successful, blockable attacks will not damage the monster. Monsters need not carry a shield to block.

Drain Effectiveness tells what % of a character's mana and life steal apply to that monster. 100 is all, 0 is none.

Chill Effectiveness tells what % of a character's cold length applies to the monster. 100 is all, 0 is no freeze/chill at all.